Browse window crashes when selecting item on Ubuntu 22.04.5 LTS

[Cobradabest]

I've just upgraded to the latest version of Anki via Flatpak today and it has randomly started crashing whenever I go to the browse window, make a search and then select any item within the results.

I’ve tried resetting windows sizes & changing rendering to software in the settings, I’ve tried clicking Check Database, and I have tried disabling add-ons. None of it makes a difference. I don’t even get an error when it happens when I run it from the terminal.

Starting Anki 25.09.2...
Gtk-Message: 00:26:07.726: Failed to load module "xapp-gtk3-module"
Qt warning: Qt: Session management error: Could not open network socket 
2026-01-19 00:26:07,801:INFO:aqt.mediasrv: Serving on http://127.0.0.1:44811
[2:22:0119/002608.388147:ERROR:bus.cc(408)] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
gettext _() is deprecated: 
<img src="/_addons/1321246682/user_files/assets/icons/deck browser icons/get shared.svg" style="margin-top: -5px; margin-right:5px">
 Get Shared 
gettext _() is deprecated: 
<img src="/_addons/1321246682/user_files/assets/icons/deck browser icons/create deck.svg" style="margin-top: -5px; margin-right:5px">
Create Deck
gettext _() is deprecated: 
<img src="/_addons/1321246682/user_files/assets/icons/deck browser icons/import file.svg" style="margin-top: -5px; margin-right:5px">
 Import File
'AnkiQt' object has no attribute 'addon_view_menu'
FORVO: Looking for word
HTTP Error 403: Forbidden
FORVO: Word not found (Page does not exist!)
Starting main loop...
deckDueTree() is deprecated; use decks.deck_tree() for a tree without counts, or sched.deck_due_tree()
addons21/1321246682/deck_browser.py:76:dayCutoff is deprecated: please use 'day_cutoff'
ngettext() is deprecated: %s <br>  minutes
awesometts/gui/homescreen.py:61:night_mode() is deprecated: use theme_manager.night_mode
gettext _() is deprecated: Shortcut key: %s
Not found: 1321246682/user_files/assets/deck_icons/Cat Signals.png
Not found: 1321246682/user_files/assets/deck_icons/Default.png
Not found: 1321246682/user_files/assets/deck_icons/I am Groot.png
Not found: 1321246682/user_files/assets/deck_icons/Makaton.png
Not found: 1321246682/user_files/assets/deck_icons/Muisic.png
Not found: 1321246682/user_files/assets/deck_icons/Martial Arts.png
Not found: 1321246682/user_files/assets/deck_icons/Robotics.png
JS error /_anki/legacyPageData?id=140123370395824:738 Uncaught TypeError: Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'.
conf key anki_ipa_conf should be fetched with col.get_config(), and saved with col.set_config()
conf key anki_ipa_conf should be fetched with col.get_config(), and saved with col.set_config()
blocked main thread for 441ms:
  File "/app/bin/anki", line 8, in <module>
    sys.exit(run())
  File "/app/lib/python3.13/site-packages/aqt/__init__.py", line 565, in run
    _run()
  File "/app/lib/python3.13/site-packages/aqt/__init__.py", line 772, in _run
    app.exec()
  File "/app/lib/python3.13/site-packages/aqt/webview.py", line 188, in cmd
    return json.dumps(self.onCmd(str))
  File "/app/lib/python3.13/site-packages/aqt/webview.py", line 275, in _onCmd
    return self._onBridgeCmd(str)
  File "/app/lib/python3.13/site-packages/aqt/webview.py", line 806, in _onBridgeCmd
    return self.onBridgeCmd(cmd)
  File "/app/lib/python3.13/site-packages/aqt/toolbar.py", line 430, in _linkHandler
    self.link_handlers[link]()
  File "/app/lib/python3.13/site-packages/aqt/toolbar.py", line 448, in _browseLinkHandler
    self.mw.onBrowse()
  File "/app/lib/python3.13/site-packages/aqt/main.py", line 1287, in onBrowse
    aqt.dialogs.open("Browser", self, card=self.reviewer.card)
  File "/app/lib/python3.13/site-packages/aqt/__init__.py", line 151, in open
    instance = creator(*args, **kwargs)
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 181, in __init__
    self.setupSearch(card, search)
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 492, in setupSearch
    self._default_search(card)
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 573, in _default_search
    self.search_for(search, prompt)
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 521, in search_for
    self.search()
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 530, in search
    self.table.search(self._lastSearchTxt)
  File "/app/lib/python3.13/site-packages/aqt/browser/table/table.py", line 190, in search
    self._model.search(SearchContext(search=txt, browser=self.browser))
  File "/app/lib/python3.13/site-packages/aqt/browser/table/model.py", line 260, in search
    self._search_inner(context)
  File "/app/lib/python3.13/site-packages/aqt/browser/table/model.py", line 275, in _search_inner
    context.ids = self._state.find_items(
  File "/app/lib/python3.13/site-packages/aqt/browser/table/state.py", line 159, in find_items
    return self.col.find_cards(search, order, reverse)
  File "/app/lib/python3.13/site-packages/anki/collection.py", line 666, in find_cards
    Sequence[CardId], self._backend.search_cards(search=query, order=mode)
  File "/app/lib/python3.13/site-packages/anki/_backend_generated.py", line 1739, in search_cards
    raw_bytes = self._run_command(29, 1, message.SerializeToString())
  File "/app/lib/python3.13/site-packages/anki/_backend.py", line 167, in _run_command
    print("".join(traceback.format_stack()))

JS warning /_anki/js/editor.js:439 No version information available for component [tex]/noerrors
JS warning /_anki/js/editor.js:439 No version information available for component [tex]/mathtools
JS error /_anki/legacyPageData?id=140119724288080:15 Refused to execute inline script because it violates the following Content Security Policy directive: "script-src http://127.0.0.1:44811/_anki/ http://127.0.0.1:44811/_addons/". Either the 'unsafe-inline' keyword, a hash ('sha256-f3wtcC4CX2axMVZCM9NhKCJWAIi/INpRKRXWBftiAac='), or a nonce ('nonce-...') is required to enable inline execution.

uncaught cmd test_IPA_loaded
blocked main thread for 561ms:
  File "/app/bin/anki", line 8, in <module>
    sys.exit(run())
  File "/app/lib/python3.13/site-packages/aqt/__init__.py", line 565, in run
    _run()
  File "/app/lib/python3.13/site-packages/aqt/__init__.py", line 772, in _run
    app.exec()
  File "/app/lib/python3.13/site-packages/aqt/webview.py", line 745, in handler
    cb(val)
  File "/app/lib/python3.13/site-packages/aqt/editor.py", line 658, in <lambda>
    self.web.evalWithCallback("saveNow(%d)" % keepFocus, lambda res: callback())
  File "/app/lib/python3.13/site-packages/aqt/utils.py", line 1329, in <lambda>
    self.editor.call_after_note_saved(lambda: func(self, *args, **kwargs))
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 508, in onSearchActivated
    self.search_for(normed)
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 521, in search_for
    self.search()
  File "/app/lib/python3.13/site-packages/aqt/browser/browser.py", line 530, in search
    self.table.search(self._lastSearchTxt)
  File "/app/lib/python3.13/site-packages/aqt/browser/table/table.py", line 190, in search
    self._model.search(SearchContext(search=txt, browser=self.browser))
  File "/app/lib/python3.13/site-packages/aqt/browser/table/model.py", line 260, in search
    self._search_inner(context)
  File "/app/lib/python3.13/site-packages/aqt/browser/table/model.py", line 275, in _search_inner
    context.ids = self._state.find_items(
  File "/app/lib/python3.13/site-packages/aqt/browser/table/state.py", line 159, in find_items
    return self.col.find_cards(search, order, reverse)
  File "/app/lib/python3.13/site-packages/anki/collection.py", line 666, in find_cards
    Sequence[CardId], self._backend.search_cards(search=query, order=mode)
  File "/app/lib/python3.13/site-packages/anki/_backend_generated.py", line 1739, in search_cards
    raw_bytes = self._run_command(29, 1, message.SerializeToString())
  File "/app/lib/python3.13/site-packages/anki/_backend.py", line 167, in _run_command
    print("".join(traceback.format_stack()))

Here is also the debug info, if it helps.

Anki 25.09.2 (3890e12c) (ao)
Python 3.13.11 Qt 6.10.1 PyQt 6.10.2
Platform: Linux-6.2.0-39-generic-x86_64-with-glibc2.42

===Add-ons (active)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
Anki IPA - Add phonetic symbols Fixed by Shige ['391848360', 2025-12-16T00:16, 'None', mod]
Anki Wrapped ['1138356489', 2025-07-20T23:41, 'None', '']
AnkiStreak ['392667675', 2025-07-23T20:43, 'None', '']
Ankitty ['1319623242', 2024-07-06T12:26, 'None', '']
AwesomeTTS - Add speech to your flashcards ['1436550454', 2025-08-16T02:02, 'None', mod]
Batch Editing ['291119185', 2023-10-26T01:38, 'None', '']
Browser Search By Word Count ['307706071', 2023-10-11T00:13, 'None', '']
Deck  Media Duplication ['293224070', 2024-08-26T16:17, 'None', '']
Deck name in title 21 ['699175524', 2019-06-01T02:05, 'None', '']
Duolingo-style gamification -- visual audio and haptic feedback ['255048658', 2025-07-02T17:59, 'None', mod]
HyperTTS - Add speech to your flashcards ['111623432', 2026-01-16T14:13, 'None', mod]
JapaneseFurigana ['678316993', 2025-07-10T17:56, 'None', mod]
Memrise Cards Lt ['884199977', 2025-12-03T06:05, 'None', '']
Modern Material Theme  - Updated 062025 ['1321246682', 2025-04-16T07:31, 'None', '']
Play a celebrationcompletion sound when you finish your deck ['978869609', 2024-01-12T04:43, 'None', mod]
Progress bar - Visualize reviewed cards and remaining Fixed by Shige ['1708250053', 2024-11-10T20:00, 'None', mod]
Quizlet to Anki 21 Importer with audio support ['1362209126', 2026-01-17T20:44, 'None', '']
Simple Forvo Audio Downloader ['560814150', 2024-09-08T14:03, 'None', '']
Zoom for Anki25 - Keep zoom level after reboot Fixed by Shige ['1923741581', 2025-10-18T03:25, 'None', mod]
memrise2anki ['memrise2anki', 0, 'None', '']
tts for linux use Kokoro-FastAPI ['733203228', 2025-07-28T10:03, 'None', '']

===IDs of active AnkiWeb add-ons===
111623432 1138356489 1319623242 1321246682 1362209126 1436550454 1708250053 1923741581 255048658 291119185 293224070 307706071 391848360 392667675 560814150 678316993 699175524 733203228 884199977 978869609

===Add-ons (inactive)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
'' ['anki-forvo-enrich', 0, 'None', mod]
Anki Habitica for 21 ['1758045507', 2026-01-14T07:20, 'None', '']
Anki Killstreaks - Reward Medals for Correct Answers Fixed by Shige ['1562475180', 2025-06-23T06:46, 'None', mod]
Anki Leaderboard - Compete with friends to boost motivation Custom by Shige ['175794613', 2026-01-12T23:24, 'None', mod]
Anki-Pacman Gamify Your Anki Experience ['927867318', 2025-02-28T15:18, 'None', '']
AnkiScape RuneScape Anki ['1808450369', 2025-08-18T23:00, 'None', '']
Ankihoot - Kahoot style gamification ['641957575', 2025-03-24T07:50, 'None', '']
Automatically flip cards ['631932779', 2021-10-10T16:28, 'None', '']
Forvo Pronunciation Downloader Fixed by Shige ['1784714388', 2025-10-12T08:31, 'None', mod]
Forvo Search ['1145562653', 2025-04-20T00:14, 'None', mod]
Hitmarkers ['1776869150', 2024-02-24T11:19, 'None', '']
Korean Support ['1336389630', 2025-06-16T22:25, 'None', '']
Offline reverso import ['759963787', 2025-07-22T15:13, 'None', '']
PassFail 2 Remove the Easy and Hard buttons ['876946123', 2024-06-04T02:56, 'None', '']
Reviewer Retest Questions after rating Again until you get it ['940071295', 2025-07-12T01:08, 'None', '']
Templates Import and Export Fixed by Shige ['2032572419', 2024-02-28T07:17, 'None', '']

I've also noticed it crashing randomly when I try to edit a card I'm currently reviewing.

Is there anything I can do to stop it from crashing?

[rayes0]

I am not able to reproduce this, so it may be caused by an addon. Have you tried running Anki without addons using flatpak run net.ankiweb.Anki --safemode and seeing if the error persists?

[Cobradabest]

Unfortunately it does...

It only seems to do it sometimes. Other times it works fine. I haven't found anything consistent...

I mostly study Korean and Japanese if that's anything to go by.